The Rock Cycle - PowerPoint PPT Presentation

The Rock Cycle. A LAB. Crayon Rock Lab. Each student needs to collect the following from the front of the class: Crayon Piece of foil Plastic utensil Rock Cycle handout. Crayon Rock Lab. You have be given a sample of crayon rock. List some characteristics about the rock:. Igneous Rock.

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The Rock Cycle

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Crayon Rock Lab • Unwrap your crayon and start to create a pile of crayon shavings on your aluminum foil. • You can trade crayons if you would like to have different colours • You will need a decent size pile, so give yourself at least 5 minutes to do this

Crayon Rock Lab • Now fold over the foil and press down on the pile as hard as you can • Unwrap the foil very carefully • Describe what this looks like:

Sedimentary Rock • formed when sediments are pressed and cemented together • Characteristics • Visible layers- curved or flat • Has pores and holes • Has fossils • Makes up 70% of the rock on the earth

Crayon Rock Lab • Bring your shavings to Mrs. Ashton and let the rock melt until it is soft to touch and the colours swirl but do not mix together • now let the rock cool • Describe what your rock looks like now

Metamorphic Rock • formed when rocks are changed by heat and pressure • Characteristics • Rarely has fossils • Alternating bands of light and dark rock • Rarely has pores or holes

Definitions • Igneous Rock- formed by cooling and hardening of hot liquid rock • Sedimentary Rock- formed when sediments are pressed and cemented together • Metamorphic Rock- formed when rocks are changed by heat and pressure